Roofing Metal Over Shingles

However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.

Roofing metal over shingles.

Otherwise you will need to remove the shingles. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles. It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow. Advantages of metal roofs over shingles.

In a standing seam roof long single panels run vertically all the way from the eave to the ridge. Asphalt shingle roofing is a dominant material for residences. If you don t want to take our word for it check with your local building department. Asphalt shingles can weigh up to four pounds per square foot depending on the brand.

Both metal and shingle roofs are great options for your next roofing project. However metal roofing is surging in popularity as more aesthetic options become available. Reroofing with metal some roofing contractors recommend reroofing with standing seam metal because the total roof weight is but a fraction of a standard asphalt shingle roof which helps preserve the roofing integrity. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.

Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. After all you ll be making a significant and long term investment. If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel.

Metal roofing weighs less than one pound per square foot. The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins. The second way to install a metal roof over a shingle roof is with the use of purlins or battens. Now there are metal shingles and panels that imitate materials like slate tile wood shake and even asphalt.

Metal is the best choice due to its very low weight per square foot and its unique design.